You might find 'Manga Z' similar to Toomics. Both have a focus on fantasy elements and complex character relationships, and the drawing styles have some commonalities too.
I think 'Your Lie in April' might be similar. It has a similar emotional depth and focuses on music-related themes.
One manga that could be similar is 'Berserk'. It has a dark and gothic theme with intense action and complex characters.
I think 'Fruits Basket' might be similar. It has a unique style and explores various themes like relationships and personal growth.
One manga that could be similar is 'Blue Lock'. It shares some strategic elements and intense character development like Catenaccio.
Well, 'Ghost in the Shell' could be a match. Both have elements of cyberpunk, advanced technology, and complex characters. Also, the storylines often explore themes of identity and humanity in a technological world, similar to 'Cyboy'.
You might find 'ZZZ' similar. It features similar visual aesthetics and tackles related themes as Kakakuro. The way the story unfolds and the emotional impact it creates are also comparable.
One manga that could be similar is 'Parasyte.' It has elements of horror and mystery like Infection and focuses on characters dealing with strange and threatening phenomena.
I'd recommend 'Blue Spring Ride'. It has a similar emotional depth and focuses on complex relationships like 'Unromantic'.
One manga that could be comparable is 'March Comes in Like a Lion'. It shares a similar depth in exploring the characters' emotions and the challenges they face in a competitive setting, similar to the strategic aspects of Shogi.
One manga that could be similar is 'Gangsta'. It features a gritty underworld setting and complex characters similar to those in Yakuza.